Alarm.



No. 822,125. I I PATENTED MAY 29, 1906.

F. M. HOBBS.

ALARM.

APPLICATION FILED OGT.21,1905.

WITNESSES. INVENTOI? a. @m F/iW/YC/S/WH/F/UA HOJES MN 27M ATTORNEYSuntrue srn rns rarsn'r erosion.

FRANCIS MARION HOBBS. OF HALESBQRO, TEXAS.

Specification of Letters Patent.

'satenteoi May 29, 19 36.

Application filed October Z1 1905. Serial No. 283,782.

To all whom it may concern.-

Be it known that I, FRANCIS lVlARION Hones, a citizen of the UnitedStates, residing at Halesboro, in the county of Red River and State ofTexas, have invented a new and Improved Alarm, of which the following isa specification.

My invention relates to alarms for general use.

into through the window.

.l/Vhile the prime object had in view pertains to alarms for windows, itis to construct a device of this character adapted for use inconjunction with any movable part and indicate the movement by ringingof a bell Stir tachment.

W ith the above objects in view I have in vented the simple, novel, andimproved alarm shown by the accompanying drawings, and hereinafterdescribed. in detail.

In the drawings, Figure 1 is a view showing sectional portions of theupper and lower sashes of a window with my improved alarm appliedthereto, the same being illustrated in side elevation. Fig. 2 is asimilar view looking at the other side of the alarm. Fig. 3 is a topplan view of the alarm shown applied. In the view portions only of thesashes are shown. Fig. 4 is adetail sectional view taken transverselythrough the rubbcrtired 0peratingwheel, the combined ratchet and tappetwheel, and the pivotal lever. Fig. 5 is a perspective view of thecombined ratchet and tappet wheel, and Fig. 6 is a side I elevation ofthe operatingnvheel.

In the preferred form of my im roved alarm I employ a base a'plate A,raving spaced lugs or standards "B, providing piv otal supporttherebetween at Cfor a suitablyfashioned lever D. The lever is pivotedto the lugs B, leaving a short finger end E and a longer curved end F.

On the base-plate A, I secure a. suitable spring G, having its free endG disposed between the lugs B and restin with tension against the underside of the nger end ill-of the leverl). 3 'i For adjusting position orlimiting movenient cf the lever ID, I arrange thereon a screw H, disosed through its longer end F, as shown in *igs. 1 and 2. The screw isprovided with any suitable "operating-headl and arranged with its innerend contacting the spring G, though obviously the screw may be arrangedto contact any portion of"- is apparent that pivotal movement of the.longerv or curved end F of the lever D may be adjusted as required.

In further carrying out my invention. I provide a-transverse pin orjournal J at the free end of the curved portion. F oi the lever D andarrange thereon a suitable wheel K,

having a rubber or other friction-rim L;

The pin J provides support for a wheel M, havine tappet-teeth N. It willbe noticed that the wheel M is located on the pin J, between the wheel Kand the lever B, and that its face or side adjacent to the wheel Khas...

a circular series of ratchetteeth O. (See Figs. 4 and 5.)

The Wheel K is provided with a suitable yielding dog or pawl arrangedfor enga ing the ratchet-teeth O on the tappetrwhee" M,- and the samemayconslst of a pinP, arranged in a suitable transverse opening Q.

The pin P-is held in the opening spring R and its inner endheld'yieldingly in contact with the ratchet-teeth O on the tap pet-wheelK by elasticity of the spring, as will be understood. On the longerorcurved end F of D, I suitably support a bell S, adapted to be soundedby a head T (see Fig. 2) at one end of an arm U, pivoted at Vto thelever D. The arm U is extended beyond its pivotpoint, as at W, (see Fig.3,) for engagement by the tappet wheel teeth N, whereby oscillatingmotion is im arted to the arm U and an alarm elieote It is intended thatthe tappet-wheel M shall be held against rotation in one directioninother words, that the friction or on the base-plate A. With thisconstruoti on Qbya the lever.

tion indicated by the arrow in Figs. 1 and 2,

and that dur ng reverse rotation ofthe flVhGE-l K the pin P shall slidefrom toctll.'to tooth Q on the wheel M through yieldin aeiz'o'n of thespringdt. Theextended end i of the oscil lating lever U is yieldinglyheldinto ngagement with the tdppt-wheel teeth N b y means of spring W,having one'end secured thereto and its other end secured to the arm D,

The construction of my improved alarm will be understood from the abovedescri tion. In the use thereof on a window tie plate A is secured tothe upper right-hand cover of the lower sash, with the longer or curvedend F of the arm D extending thereabove and backwardly, holding theoperating-wheel K against the adjacent side rail of impart oscillatingaction in the arm U, causing its headed end T to strike andintermittently sound the bell. ,Movement of the longer end F of the armD toward the upper window-sash may be adjusted by means of the screw H,and when it is desired to r ise or lower the sashes without sounding t,e bell the wheel K is adjusted back'wardlytrom its 0 crating positionby simple pressure on the 0 s orter or fin er end E of the arm D. The

screw H has urther usefulness in serving as a stop to prevent movementof the arm D, carrying the operating-wheel'out of working osition whenthe upper sash is completely owered. A

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is 3 1. The combination in an alarm, of an armpivoted between its ends to a suitable support, leaving one endextended, providing a nnger en'd, whereby to operate the lever, anoperating-wheel. at the other end of the arm, a ta pet-wheel on saidarm-driven through ratchet-means upon rotation in one direction of theoperating-wheel, a suitably-supported bell, an oscillating arm havingone end in contact with the tappet-wheel, andits other end adapted tostrike the bell, a spring holding the oscillating arm under tension, anda spring under the finger end of the pivoted arm holding same yieldinglyelevated, sub- 'stantially as described.

2. The combination in an alarm, of a suitable base, an arm pivotedbetween its ends, to the base, an operating-wheel at one end of saidarm, a tappet-wheelat the same end of said arm, ratchet -teeth on thetappet-wheel, a yielding dog on the operating-wheel, the dog beingarranged in engagement with said ratchet-teeth, a suitably-sup ortedbell, an

oscillating arm having pivota support on the pivoted arm, theoscillating arm having one end in engagement with the tappet-wheel andits other and adapted to strike the bell, a spring holdin the pivotedarm-under tension, a spring hol ing the oscillating arm under tension,and means limiting movement of the pivoted arm, substantially asdescribed.

3. The combination in analarm, of a suit-' able base, an arm pivotedbetween-its ends to the base, an operating-wheel at one-end of said arm,a tappet-wheel at the same end of the arm, ratchet-teeth on thetappet-wheel, a pin on the operating-wheel held yieldingly in engagementwith said ratchet-teeth, a bell having support on the pivoted arm,-anoscillating arm having support on the pivoted arm, springs holdingthe'pi-votedand oscillating arms under tension, the oscillating armhaving one end'in engagement with the tapnetwheel, and 'its other endadapted to strike the bell, and a screw onthe pivoted arm adapted foradjustment limiting movement of the pivoted arm, substantially asdescribed.

I FRANCIS MARION HOBBS.

Witnesses:

ALBERT STEVENSON, W. F. NroKs.

